An exercise:
Name something that you do not do but should/wish you did/are told you ought, or that you do less than is normally recommended. (For instance, "exercise" or "eat vegetables".)
Make an exhaustive list of your sufficient conditions for avoiding this thing. (If you suspect that your list may be non-exhaustive, mention that in your comment.)
Precommit that: If someone comes up with a way to do the thing which doesn't have any of your listed problems, you will at least try it. It counts if you come up with this response yourself upon making your list.
(Based on: Is That Your True Rejection?)
Edit to add: Kindly stick to the spirit of the exercise; if you have no advice in line with the exercise, this is not the place to offer it. Do not drift into confrontational or abusive demands that people adjust their restrictions to suit your cached suggestion, and do not offer unsolicited other-optimizing.
To alleviate crowding, Armok_GoB has created a second thread for this challenge.
The idea is that by deleting something you condemn everything that was in it as useless. Even that incredibly catchy metaphor about cats and trash compactors. Or the perfectly good first page that is followed by 10 pages of dross. It's useful to keep a backlog of things you've done and discarded. When you have distanced enough from the work enough, you can return and analyse, and learn not only from your mistakes, but also from the gems that may be found among them.If you delete your writing, you retain only the feeling of not being satisfied with it, unless you have perfect memory.
Alternatively, a backlog of truly horrible writing attempts gives you a chance to compare your various efforts and see how you've grown and, possibly, where you've gone wrong recently. Personally I keep most of my things on my laptop, including seperate files for various versions of the same story, ideas that never went past a single paragraph, various abandoned-in-progress things and stories that I felt were excellent at time of writing, but are actually weak. It won't directly motivate to write, but it does help improve over time, and quality tends to contribute to motivation somewhat.
"But surely it's better to delete what you do nothing but cringe at, while keeping writing that's mostly bad but has a couple good points! When you come back..."
"Stop. What you're defending is what you already do. [wordless] Faced with a choice either to change one's mind or to prove there's no need to do so, almost everyone gets busy on the proof. Domain experts are telling you you're wrong. [/wordless] Change your mind."
"I changed my mind! I'm such a good rationalist! Can I go brag on LW?"
"Knock yourself out. Maybe you ... (read more)